Re:

why not use the installer, which sets it all up correctly for you?

In previous, I use installer. but I face more data corruption problem and also server starting problem  when shutting down the system.  so I try to install my self. 

I think the problem is, you ran initdb as your user account, but the system service is running as the special system accounbt NETWORK_SERVICE, or similar, and there may be files in the data directory which the NETWORK_SERVICE account doesn't have write access writes to.   you can probably fix this with the cacls command.

I think you are correct. But I want to know why database corrupted even though I shutting down the machine properly. This is frequently happen when I use installer also.

It seems like Windows isn't waiting for the service to exit cleanly before its pulling the plug.   Is this a Windows *server* version, or is it one of the newer desktop OS's like Windows 8?   Windows 8 seems to shut down rather fast, its quite possible its not bothering to wait for services to exit.

this error...

-- 
john r pierce                                      37N 122W
somewhere on the middle of the left coast